QUARTZITE


Quartzite is a metamorphic rock formed when quartz sands are subjected to extreme heat and pressure due to tectonic forces. Pure quartzite is white. The individual quartz crystals are generally visible.


Like a marble, color and patterns in quartzite are the result of impurities. Quartzite is very hard (unlike a marble), having a Mohs hardness of 7 (it easily cuts glass), and is not acid or water soluble. Being thus resistant to weathering, it often forms ridges and hilltops.


See Steve's video interview about asteroid capture at Moonandback:
Part 1
Part 2
Part 3
 


Copyright ©1995-2023 by Amethyst Galleries, Inc.